Human Genome Sciences Inc.

The Food and Drug Administration on Wednesday approved the first new drug to treat lupus in 56 years. It's not terribly effective: It only worked for 35% of the patients tested. But experts say the approval could prompt the development of more effective drugs.

Human Genome Sciences Inc. (HGSI) reported first quarter financial results Wednesday after the close of trade, posting its first ever product-related sales and profits that even beat Wall Street's estimates. To what does Human Genome owe its success? Why to Anthrax, of course. Human Genome earned...